fix(brain): drop click-spotlight — selection feedback via halo + panel only

Spotlighting on click moved camera by the same delta as the orbit
target, holding camera→target distance constant. Visually that meant
clicks on satellites in front of the camera looked like zoom-in;
clicks on satellites behind looked like zoom-out — same code path,
opposite direction depending on which side of origin the satellite
lived on.

There is no symmetric click-camera that "feels right" on a free orbit
— either the camera moves and feels arbitrary, or it stays put. Going
with stays-put. The selected node is already obvious from the white
body + 1.4× halo + the detail panel; the eye doesn't need a camera
move to find it.

Camera.spotlight() / returnToOrigin() remain in the API for future
use but are no longer called from click or from real firing events.

Tests: 167 passed.

Author: AdityaVG13

desktop/cortex-control-center/src/brain-v2/index.jsx

@@ -106,11 +106,11 @@ export function BrainV2({ api = null, cortexBase = "http://127.0.0.1:7437", auth
       core,
       pulseCoreHalo: () => pulseCoreHalo(core),
       onTickerEntry: pushTickerEntry,
-      onSpotlight: (slot) => {
-        if (slot) {
-          cameraHandle.pauseAutoRotate();
-          cameraHandle.spotlight(slot);
-        }
+      onSpotlight: () => {
+        // Camera spotlight on real firing events disabled — repeated triggers
+        // were producing inconsistent zoom direction depending on which side
+        // of origin the firing satellite lived on. Selection feedback comes
+        // from the satellite halo pulse + detail panel only.
       },
     });
     dispatcherRef.current = dispatcher;
@@ -275,24 +275,18 @@ export function BrainV2({ api = null, cortexBase = "http://127.0.0.1:7437", auth
       satellitesRef.current.setSelected(null);
       setSelectedSlot(null);
       selectedSlotRef.current = null;
-      cameraHandleRef.current?.returnToOrigin?.();
       return;
     }
     satellitesRef.current.setSelected(slot.id);
     setSelectedSlot(slot);
     selectedSlotRef.current = slot;
-    if (cameraHandleRef.current) {
-      cameraHandleRef.current.pauseAutoRotate();
-      cameraHandleRef.current.spotlight(slot);
-    }
   }
 
   function handleContextMenu(e) {
     e.preventDefault();
     satellitesRef.current?.setSelected(null);
     setSelectedSlot(null);
     selectedSlotRef.current = null;
-    cameraHandleRef.current?.returnToOrigin?.();
   }
 
   return (

desktop/cortex-control-center/src/brain-visualizer.test.js

@@ -242,12 +242,12 @@ describe("Brain v2 interaction (P6)", () => {
     expect(v2Index).toContain("now - lastStatsAtRef.current >= 1000");
   });
 
-  it("BrainV2 wires hover + camera spotlight + click-pin + right-click deselect", () => {
+  it("BrainV2 wires hover + click-pin + right-click deselect (no click camera move)", () => {
     expect(v2Index).toContain("createHover");
     expect(v2Index).toContain("createCamera");
     expect(v2Index).toContain("hoveredSlotRef");
     expect(v2Index).toContain("selectedSlotRef");
-    expect(v2Index).toContain("cameraHandleRef.current.spotlight(slot)");
+    expect(v2Index).not.toContain("cameraHandleRef.current.spotlight(slot)");
     expect(v2Index).toContain("e.preventDefault()");
     expect(v2Index).toContain("onContextMenu={handleContextMenu}");
   });